JPH0635689A - Rom-writing method and information processor - Google Patents

Abstract

PURPOSE:To share a library or object file written in a ROM, and to effectively use the storage area of the ROM. CONSTITUTION:RAM user symbols 42c and 42d having the address information of user data programs 41c and 41d stored in an RAM 4 on the RAM 4, are successively written in an ROM symbol table area 32 of a user ROM 3 as ROM user symbols 32c and 32d in the order of the address of the user ROM 3. And also, the user data programs 41c and 4ld stored in the RAM 4 are successively written in a ROM data program area 31 of the user ROM 3 as user data programs 31c and 31d in the order of the address of the user ROM 3.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a ROM conversion method suitable for use in, for example, developing a program into a ROM.
And an information processing device.

[0002]

2. Description of the Related Art In an information processing apparatus that executes a program by a so-called dynamic link method, an object file (file consisting of object code) obtained by compiling the program (source code of the program) is stored in a main memory such as a RAM built in the apparatus. When the object file is loaded into the device, the object file is linked with the library necessary for executing the program and other object files separately compiled.

Therefore, if any object file or library that has been separately compiled is changed or modified, only the object file or library needs to be changed or modified to execute the program as described above. Since the changed or modified object file or library is linked, the object file or library or data can be easily shared with any program.

[0004]

By the way, when a program is made into a ROM, the object files and libraries necessary for the program are linked in advance, and the data is written in the ROM in the form of a load module. As described above, there is a problem that the created object file or library cannot be shared with any program.

Further, for example, when a user library or an object file having the same name as the system library is newly loaded onto the RAM (main storage device) incorporated in the information processing device and executed, the user library having the same name as the system library is executed. Alternatively, the object file is linked and becomes effective, but if this is ROMized, the user library or the system library having the same name as the object file is linked, and the problem is that the ROMized program (load module) does not perform the desired operation. there were.

Further, as a method of ROMization, an object file (object code) or library as a program loaded in the RAM is directly RO
There is a method of writing in M. However, since the object file (object code) or library as a program is allocated to a free area on the RAM, that is, the object file (object code) or library as a program is allocated to a free area of the RAM. However, in the ROMization method described above, an unnecessary empty area is formed in the ROM, and the storage area cannot be effectively used, which is wasteful.

The present invention has been made in view of such a situation, and makes it possible to share a ROMized library and object files, and
The storage area of the ROM can be effectively used.

[0008]

A ROM according to claim 1, wherein:
The data conversion method is, for example, a data program such as a program or data on the RAM and the RA of the data program.
RO with the symbol having the address information on M
It is characterized by sequentially writing in the order of M addresses.

An information processing apparatus according to claim 2 is a RAM
The user data programs 41c and 41d, such as data and programs, stored in FIG. 4 having the address information on the RAM 4 such as RAM user symbols 42c and 42d are represented by the user R.
The user data programs 41c and 41d stored in the RAM 4 and the processing step S2 of the program as a symbol writing unit that sequentially writes in a predetermined area of the OM3 such as the ROM symbol table area 32 in the order of the address of the user ROM3 are stored in the RAM 4. Of ROM3,
For example, in another area such as the ROM data program area 31, a program processing step S3 as a data program writing means for sequentially writing in the address order of the user ROM 3 is provided.

This information processing apparatus has user data programs 31c and 31d written in the user ROM 3.
To the ROM symbol 32 written in the user ROM 3.
It is possible to further include processing steps S23 and S24 of a program as a data program expanding unit which expands to an address of the RAM 4 according to the address information of c and 32d.

[0011]

According to the ROM method of claim 1, R
The data program on AM and the data program
A symbol having address information on the RAM,
Writing is performed sequentially in the order of ROM addresses. Therefore, the storage area of the ROM can be effectively used. Furthermore, by referring to the address information of the symbol and expanding the ROMized data program to the original position (address) of the RAM, it is possible to easily share it with other programs.

In the information processing apparatus according to the second aspect, the user data program 41 stored in the RAM 4
RAM user symbols 42c and 42d of c and 41d having address information on the RAM 4 are sequentially written in the ROM symbol table area 32 of the user ROM 3 in the order of the address of the user ROM 3, and R
The user data programs 41c and 41d stored in the AM 4 are sequentially written in the ROM data program area 31 of the user ROM 3 in the address order of the user ROM 3. Therefore, the storage area of the user ROM 3 can be effectively used.

When the user data programs 31c and 31d written in the user ROM 3 are expanded to the addresses of the RAM 4 in accordance with the address information of the ROM symbols 32c and 32d written in the user ROM 3, the programs or data stored in ROM are stored. But R
Since it is expanded to the original position (address) of AM4, it can be easily shared with other programs.

[0014]

1 is a block diagram showing the configuration of an embodiment of an information processing apparatus of the present invention. CPU1 is system R
OM2, user ROM3, RAM4, ROM writer 5,
Keyboard 6, display 7, and disk device 8
It is connected to and controls the entire device. System RO
As shown in FIG. 2, the M2 is divided into a ROM data program area 21 and a ROM symbol table area 22, and the ROM data program area 21 includes a program necessary for system operation and data used by the program. In addition, a standard library of the system and a system data program as data used in the library are stored in advance.

The ROM symbol table area 22 of the system ROM 2 has its ROM data program area 21.
The ROM symbols 23 _{1 to} 23 _P , which are, for example, the address information for managing the addresses of each of the P system data programs stored in, are stored. ROM symbol 23 _p (p = 1, 2, ...
, P) is the ROM symbol 23 _p , as shown in FIG.
Is the RAM symbol table area 4 of the RAM 4 described later.
2 (FIG. 5), a RAM symbol table index 23 _p1 indicating an address (for example, a start address) on the RAM 4 when expanded to a system data program (hereinafter referred to as a data program PRG _p) managed by the ROM symbol 23 _p. RO indicates the address (for example, the start address) stored in the system ROM 2
M upper pointer 23 _p2 , symbol name 23 _p3 indicating the program name of the data program PRG _p , data program P
Data size 23p ₄ indicating the size of the RG _p, indicates the status of the data program PRG _p, i.e. the data the program PRG _p is, for example, a flag indicating whether the for the system or for the user, whether an executable RA when a status 23 _p5 consisting of a flag indicating the number and a data program PRG _p are expanded in a RAM data program area 41 (FIG. 5) of the RAM 4 described later.
It is composed of a pointer 23 _p6 which indicates an address (for example, a start address) on M4.

As shown in FIG. 4, the user ROM 3 stores the R
The ROM data program area 31 is divided into an OM data program area 31 and a ROM symbol table area 32. In the ROM data program area 31, a user data program (a program created by the user (including a library, a compiled object file, etc.)) And data) are written.

Further, in the ROM symbol table area 32 of the user ROM 3, the ROM is written by the ROM writer 5.
For example, Q stored in the data program area 31.
Each pieces of the user data program, so to speak ROM symbol 33 ₁ to 33 _Q as address information for the address management is to be written. ROM symbol 33
_q (q = 1, 2, ..., Q) is the system R described above.
As with the ROM symbol 23 _p stored in the OM2, the RAM symbol table index 33 _q1 , RO
A user data program whose address is managed by the M symbol 33 _q (hereinafter referred to as a data program PRG _q )
Is a ROM pointer 33 indicating an address (for example, a start address) stored (written) in the user ROM 3.
_{It comprises q2} , symbol name 33 _q3 , data size 33 _{q 4} , status 33 _q5 , and pointer 33 _q6 (FIG. 3).

As shown in FIG. 5, the RAM 4 is divided into a RAM data program area 41 and a RAM symbol table area 42. In the RAM data program area 41, data is input from the keyboard 6 or a disk (disk device 8) is used. A user data program (including a program (including a library, a compiled object file, and the like) created by the user, data, and the like) that is read from (not shown) is stored.

RAM symbol table area 4 of RAM 4
RAM symbols 43 _{1 to} 43 _R , which are stored in the RAM data program area 41 and are used as address information for managing the addresses of the R user data programs, for example, are written in the area 2.
The RAM symbol 43 _r (r = 1, 2, ..., R) is
As shown in FIG. 6, a symbol name 43 _r1 indicating a program name of a user data program (hereinafter referred to as a data program PRG _r ) whose address is managed by the RAM symbol 43 _r , and a data size 43 indicating a size of the data program PRG _{r. r 2,} showing the status of the data program PRG _r, i.e. the data the program PRG _r consists of, for example, a flag indicating whether it is for the system or for the user, a flag indicating whether an executable status 43 _r3 and the data program PRG _r
It is composed of a pointer 43 _r4 indicating an address (for example, a head address) allocated in the RAM data program area 41 of the RAM 4.

Here, the data program PRG _r stored in the RAM 4 is converted into a ROM and stored in the user ROM 3 as P.
When written as RG _q , the symbol name 43 _r1 , data size 43 _r2 , and status 4 in the RAM symbol 43 _r of the data program PRG _r shown in FIG.
3 _r3 or pointer 43 _r4 is copied as the symbol name 33 _q3 , data size 33 _q4 , status 33 _q5 , or pointer 33 _q6 in the ROM symbol 33 _q of the data program PRG _q shown in FIG. address RAM symbol 43 _r has been stored in RAM4 of PRG _r is copied into RAM symbol table index 33 _q1, data program PRG _r is the user ROM3, address of the user ROM3 is ROM on pointer written as PRG _q It is stored (written) in 33 _q2 .

The ROM writer 5 is controlled by the CPU 1,
The user data program read from the RAM 4 by the CPU 1 and the symbol as its address information are written in the user ROM 3. The keyboard 6 is for inputting, for example, a user data program and commands to the CPU 1. The display 7 is a CPU
It is controlled to 1 and displays characters and images. Disk device 8
Reads the user data program (user data program file) recorded on the disk, and the CPU 1
To RAM 4 via.

The operation of the apparatus configured as described above when the user data programs 41c and 41d are stored in the ROM will be described with reference to the flowchart of FIG. 7 and FIG. First, when the keyboard 6 is operated to input the user data programs 41c and 41d, or when the user data programs 41c and 41d are read from the disc mounted in the disc device 8,
In the CPU 1, this user data program 41c
Alternatively, 41d is allocated to a free area of the RAM data program area 41 of the RAM 4, and its address (for example, a start address) is a pointer of an unused RAM user symbol (RAM symbol) 42c or 42d in the RAM symbol table area 42 (see FIG. 6 _r 43 _r4 ) (FIG. 8 (a)).

In FIG. 8A, for example, system data programs 41a and 41b as data and libraries necessary for executing the user data programs 41c and 41d, and their RAM system symbols (RAM symbols) 42a. And 42b
Has been expanded in the RAM 4 in advance.

RA of the user data program will be described below.
The M symbol is described as a RAM user symbol, and the RAM symbol of the system data program is described as a RAM system symbol.

At the same time, the RAM user symbol 42c or 42d in the RAM symbol table area 42 of the RAM 4
Includes the user data program 41c or 4 described above.
The 1d symbol name (program name), size, and status (43 _{r1 to} 43 _{r3 in} FIG. 6) are stored.

Then, in step S1 shown in FIG. 7, the RAM user symbol stored in the RAM symbol table 42 of the RAM 4 is searched, and the process proceeds to step S2. In step S2, the ROM symbol table area 32 of the user ROM 3 is secured, for example, in order from the lower address, the area for writing the ROM user symbol (ROM symbol) of the user data program to be ROMized is secured. R
From the AM user symbol to the ROM user symbol (RO
M symbols) are generated and written (FIG. 8).
(B)).

Here, R of the user data program will be described below.
The OM symbol is described as a ROM user symbol, and the ROM symbol of the system data program is described as a ROM system symbol.

When the ROM user symbol is written in the ROM symbol table area 32 of the user ROM 3 in step S2, the user data program corresponding to the ROM user symbol is stored in the lower address of the ROM data program area 31 of the user ROM 3 in step S3. Are sequentially written from step S4 to step S4. In step S4, it is determined whether or not all the RAM symbols (RAM user symbols) stored in the RAM symbol table area 42 of the RAM 4 have been searched in step S1. When it is determined in step S4 that all the RAM symbols (RAM user symbols) stored in the RAM symbol table area 42 of the RAM 4 have not been searched in step S1, the process returns to step S1 and the RAM symbols of the RAM 4 in step S4. The processes of steps S1 to S4 are repeated until it is determined in step S1 that all the RAM symbols (RAM user symbols) stored in the table area 42 have been searched.

In step S4, the RAM of RAM4
If it is determined in step S1 that all the RAM symbols (RAM user symbols) stored in the symbol table area 42 have been searched, the process ends.

Through the above processing (steps S1 to S4), the user data program 4 allocated in the free area of the RAM data program area 41 of the RAM 4
1c and 41d are sequentially written as user data programs 31c and 31d from the lower address of the ROM data program area 31 of the user ROM 3, and their RAM user symbols 42c and 42d are written.
Is the ROM symbol table area 32 of the user ROM 3.
ROM user symbol 32c sequentially from the lower address
And 32d, and the user data programs 41c and 41d are converted to ROM (FIG. 8).

Next, referring to the flow chart of FIG.
In order to execute a data program (system data program and user data program) written in the system ROM 2 or the user ROM 3, it is RA
The operation when loaded in M4 will be described. First, in step S11, the ROM symbol (R
OM user symbol and ROM system symbol) 2
3 _p or 33 _q (FIG. 3) is assigned to the RAM symbol (ROM user symbol and RO symbol) at the address on the RAM 4 indicated by the RAM symbol index 23 _p1 or 33 _q1.
M system symbol) 43 _r (Fig. 6),
Go to step S12.

In step S12, step S11
The symbol name 43 _r1 and the pointer 43 _{r4 of} the RAM symbol 43 _r expanded in the RAM 4 are referred to, and the data program having the program name (symbol name) having the same name as the symbol name 43 _r1 is stored in the system ROM 2 or the user R.
Read from OM3, the RAM data program area 41 of the RAM 4 (Fig. 5), is developed to address pointer 43 _r4 refers, for example, in the head address.

Then, in step S13, all ROM symbols 23 _p (p = 1, p = 1, w) written in the system ROM 2 or the user ROM 3 in step S11.
2, ..., P) or 33 _q (q = 1, 2, ...,
Q) (FIG. 3) is the RAM symbol index 23
RAM to the address on RAM4 indicated by _p1 or 33 _q1
It is determined whether the symbol 43 _r (r = 1, 2, ..., R) (FIG. 6) has been developed.

In step S13, step S11
All ROM symbols 23 _p or 33 _q written in the system ROM 2 or user ROM 3 by
Its RAM symbol index 23 _p1 or 33
RAM symbol 43 is assigned to the address on RAM4 indicated by _q1.
If it is determined that it is not expanded as _r (Fig. 6),
Returning to step S11, in step S13, all the ROM symbols 23 _p or 3 written in the system ROM 2 or the user ROM 3 in step S11.
3 _q (FIG. 3) is the RAM symbol index 23
RAM to the address on RAM4 indicated by _p1 or 33 _q1
The processes of steps S11 to S13 are repeated until it is determined that the symbol 43 _r has been expanded (FIG. 6).

In step S13, step S11
All ROM symbols 23 _p or 33 _q written in the system ROM 2 or user ROM 3 by
Its RAM symbol index 23 _p1 or 33
RAM symbol 43 is assigned to the address on RAM4 indicated by _q1.
If it is determined that the data has been expanded as _r (FIG. 6), the processing ends.

As described above, the data program written in the system ROM 2 or the user ROM 3 is R
Loaded into AM4.

Further, when the user data programs 31c and 31d stored in the ROM of the user ROM 3 are executed by using (referring to) the system programs 21a and 21b written in advance in the system ROM 2, the user data Programs 31c and 31d or system programs 21a and 21
FIG. 1 shows the operation when b is loaded into the RAM 4 from the user ROM 3 or the system ROM 2, respectively.
This will be described with reference to the flowchart of FIG.

For example, when the apparatus is activated, in step S21 shown in FIG. 10, the ROM system symbol 22a or 22b stored in the ROM symbol table area 22 of the system ROM 2 is the RAM of the RAM 4 as the RAM system symbol 42a or 42b. Each is expanded in the symbol table area 42 (FIG. 11), and the process proceeds to step S22. In step S22, as in step S12 shown in FIG. 9, the ROM system symbol 22a or 22b written in the ROM data program area 21 of the system ROM 2 is written.
The system data program 21a or 21b corresponding to the RAM system symbol 42a or 4 respectively.
System data program 41 corresponding to each 2b
It is loaded into the RAM program data area 41 of the RAM 2 as a or 41b (FIG. 11).

Then, in step S23, the ROM user symbol 32c or 32d stored in the ROM symbol table area 31 of the user ROM 3 is stored in the RAM.
The user symbol 42c or 42d is developed in the RAM symbol table area 42 of the RAM 4 (FIG. 12), and the process proceeds to step S24. In step S24, the ROM user symbol 32c, which is written in the ROM data program area 31 of the user ROM 3 in the same manner as in step S12 shown in FIG.
Or 32d corresponds to the user data program 31c or 31d, the RAM system symbol 42
A user data program 41c or 41d corresponding to c or 42d, respectively, is loaded into the RAM program data area 41 of the RAM 2 (FIG. 12), and the process is terminated.

As described above, the data program such as a program or data on the RAM 4 and the RAM
Since the RAM symbol having the address information on 4 is sequentially written from the lower address of the user ROM 3, the storage area of the user ROM 3 can be effectively used, and the address information of the RAM symbol can be referred to, A data program such as a ROMized program or data can be easily shared with other programs by expanding it to the original position of RAM 4 (address allocated in RAM 4 before ROMization). it can.

As shown in FIG. 13, the system data programs 41a '' and 41e and the RAM system symbols 42a '' and 42e thereof are loaded in the RAM 4 first, and the system data program 41a 'is loaded later. When a user data program 31a having the same program name (symbol name) as'is loaded from the user ROM 3 to the RAM 4, first the RAM
System data program 41 loaded in 4
a '' (the area of the RAM 4 where the system data program 41a '' was stored) is released. And that RA
The ROM user symbol 32a 'of the user data program 31a' written in the user ROM 3 is stored in the area where the M system symbol 42a '' was stored in the RAM 4.
Is loaded as a RAM user symbol 42a ', and the user data program 31a' is expanded in the RAM 4 as a user data program 41a 'according to the address information of the RAM user symbol 42a'.

[0042]

According to the ROMization method of the first aspect, the data program on the RAM and the symbol having the address information of the data program on the RAM are sequentially written in the order of the ROM addresses. Therefore, R
The storage area of the OM can be effectively used. further,
By referring to the address information of the symbol and expanding the ROMized data program to the original position (address) of the RAM, it can be easily shared with other programs.

According to the information processing apparatus of claim 2,
RAM of user data program stored in RAM
The symbols having the above address information are sequentially written in a predetermined area of the ROM in the order of the addresses of the ROM, and the user data program stored in the RAM is sequentially written in the other areas of the ROM in the order of the addresses of the ROM. Therefore, the storage area of the ROM can be effectively used.

According to the information processing apparatus of claim 3,
The user data program written in the ROM is stored in the RO
In the case of expanding to a RAM address according to the address information of the symbol written in M, the ROMized program or data is expanded to the original position (address) of the RAM, so it is shared with other programs. Can be easily performed.

[Brief description of drawings]

FIG. 1 is a block diagram showing the configuration of an embodiment of an information processing apparatus of the present invention.

FIG. 2 is a diagram showing more details of the configuration of a system ROM 2 of the embodiment of FIG.

FIG. 3 shows the ROM symbol 23 _{p in} FIG. 2 or RO in FIG.
It is a figure which shows the detail of a structure of M symbol 33 _q .

FIG. 4 is a diagram showing a more detailed configuration of a user ROM 3 of the embodiment of FIG.

5 is a diagram showing more details of the configuration of a RAM 4 of the embodiment of FIG.

6 is a diagram showing more details of the configuration of the RAM symbol 43 _r of FIG.

FIG. 7 is a flowchart for explaining an operation when ROMization is performed in the embodiment of FIG.

FIG. 8 is a diagram for explaining an operation when ROMization is performed in the embodiment of FIG.

FIG. 9 is a data program written in a system ROM 2 or a user ROM 3 in the embodiment of FIG.
It is a flow chart for explaining operation at the time of being expanded to AM4.

10 is a flowchart for explaining an operation when a data program written in the system ROM 2 and the user ROM 3 is expanded in the RAM 4 in the embodiment of FIG.

FIG. 11 is a diagram for explaining the operation when the data program written in the system ROM 2 and the user ROM 3 is expanded in the RAM 4 in the embodiment of FIG. 1.

12 is a diagram for explaining the operation when the data program written in the system ROM 2 and the user ROM 3 is expanded in the RAM 4 in the embodiment of FIG. 1. FIG.

FIG. 13 is a diagram for explaining the operation when the system data program 41a ″ stored in the RAM 4 is released in the embodiment of FIG.

[Explanation of symbols]

1 CPU 2 System ROM 3 User ROM 4 RAM 5 ROM Writer 6 Keyboard 7 Display 8 Disk Device 21 ROM Data Program Area 21a, 21b System Data Program 22 ROM Symbol Table Area 22a, 22b ROM System Symbol 23 _{1 to} 23 _P ROM Symbol 23 _p1 RAM symbol table index 23 _p2 ROM pointer 23 _p3 symbol name 23 _p4 data size 23 _p5 status 23 _p6 pointer 31 ROM data program area 31a 'user data program 31c, 31d user data program 32 ROM symbol table area 32a' ROM user symbol 32c, 32d ROM system symbols 33 ₁ to 33 _Q ROM symbol 33 _q1 RAM symbol table Index 33 _q2 ROM on pointer 33 _q3 symbol name 33 _q4 data size 33 _q5 status 33 _q6 pointer 41 RAM data program area 41a system data program 41a 'user data program 41a'', 41b, 41e system data program 42 RAM symbol table 42a RAM System symbol 42a 'RAM user symbol 42a'', 42b, 42e RAM system symbol 43 _{1 to} 43 _R RAM symbol 43 _r1 symbol name 43 _r2 data size 43 _r3 status 43 _r4 pointer

Claims (3)

[Claims] 1. A ROM-ized method, wherein a data program on a RAM and a symbol of the data program having address information on the RAM are sequentially written in the order of ROM addresses. 2. A symbol writing unit that sequentially writes symbols having address information in the RAM of a data program stored in the RAM to a predetermined area of the ROM in the order of the addresses of the ROM, and the symbol writing unit stored in the RAM. An information processing apparatus, comprising: a data program writing unit that sequentially writes the data program in another area of the ROM in the order of addresses of the ROM. 3. The data program expanding means for expanding the data program written in the ROM to an address of the RAM according to the address information of the symbol written in the ROM is further provided. 2. The information processing device according to 2.